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PV Voltage Drop Calculator

Single-run DC voltage drop; keep under 3% per NEC guidance.

Inputs

Inputs and assumptions

Operating current.

Run length.

12AWG 6530; 10AWG 10380.

String voltage.

Result

Drop %
—
Drop
—

What to check

  • Installer quote
  • Utility tariff

Related calculators

Screening tool. Verify tariff, metering, NEC 690 and installer quotes. IRR solved in browser; NPV here uses closed-form factor.

Saved calculations

Keep the assumptions with the result.

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